75387425 has 6 divisors (see below), whose sum is σ = 93480438. Its totient is φ = 60309920.

The previous prime is 75387419. The next prime is 75387437. The reversal of 75387425 is 52478357.

It can be written as a sum of positive squares in 3 ways, for example, as 1014049 + 74373376 = 1007^2 + 8624^2 .

It is not a de Polignac number, because 75387425 - 2¹⁴ = 75371041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1507724 + ... + 1507773.

It is an arithmetic number, because the mean of its divisors is an integer number (15580073).

Almost surely, 2^75387425 is an apocalyptic number.

It is an amenable number.

75387425 is a deficient number, since it is larger than the sum of its proper divisors (18093013).

75387425 is a wasteful number, since it uses less digits than its factorization.

75387425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015507 (or 3015502 counting only the distinct ones).

The product of its digits is 235200, while the sum is 41.

The square root of 75387425 is about 8682.5932186185. The cubic root of 75387425 is about 422.4412345470.

The spelling of 75387425 in words is "seventy-five million, three hundred eighty-seven thousand, four hundred twenty-five".